Injectors, one of the best Gdamn power mods you can do and will not only add power, but increased mileage numbers. DDII's (not affiliated in any way, but just a satisified user) is a great way to go (80 useable HP). Just MHO. Add an EZ, but beware, you need transmission mods, and you will have a pulling machine. Check out DTT's website and these are the mods that Bill K. suggests for ultimate pulling.